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IEVref:702-08-53ID:
Language:enStatus: Standard
Term: (exchangeable) noise power (of a one-port device)
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Definition: the exchangeable power at the terminals of a one port device due solely to its sources of noise

NOTE 1 – A receiving antenna can be regarded as a one-port device when viewed from its output port.

NOTE 2 – If the impedance of the device has a constant real part at thermodynamic temperature T and if quantum effects are neglected, the exchangeable noise power spectral density due solely to thermal noise of the device is independent of frequency and equal to kT where k is Boltzmann's constant.


Publication date:1992-03
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